The theme is related to historical and social context in the excerpt above by communicating the message that -Small things like grocery shopping represent larger differences.
Step-by-step explanation:
The narrator tries to reflect the difference in the lifestyle of Mexico and United States.The narrator likes the social life of Mexico when she mentions in the passage that she used to go out for grocery shopping almost everyday in mexico and used to love chit-chatting with the grocery shop merchants ,the neighbors about the smell,color and taste of the fruit but in USA she is missing all these thing she feels the lifestyle is frozen like the frozen food every body is busy with its life and they don't have time to interact with each other.
Thus we can say that the theme is
related to historical and social context in the excerpt above by communicating the message that -Small things like grocery shopping represent larger differences.